Union Urban Development Ministry had notified a Fair Fixation Committee (FFC), headed by former Delhi High Court judge M L Mehta, for revision of fares for Delhi Metro in May-end.
It was given a three-months time to submit the report but now the Committee head has asked the government another three more months to submit its report.
The other members of the 4th FFC are Urban Development Ministry Additional Secretary Durga Shanker Mishra and DelhiChief Secretary KK Sharma.
Delhi MetroRail Corporation (DMRC) has been demanding that fares be hiked in view of increase in electricity tariff, which is a major component of the operational cost.
New fares can only be implemented on the recommendation of a committee on fare revision, set up by the Ministry of Urban Development.